Change Log V.17

• Nightmare! skill change the background music to PC music (remastered by Andrew Hulshult)
• Bug Fix -> Demons no longer stand still after being hit by an explosive barrel. Instead, they redirect their attack towards the entity that exploded the barrel, if possible.
• Bug Fix -> Resolve a memory leak by quitting the current level and restarting a game several times in a row.
• Bug Fix -> Armor items no longer grant armor points. This has now been corrected.
• At begin of a level, give some information like level name and level skill with custom sentence.